WO2019149229A1 - 打草机 - Google Patents

打草机 Download PDF

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Publication number
WO2019149229A1
WO2019149229A1 PCT/CN2019/074021 CN2019074021W WO2019149229A1 WO 2019149229 A1 WO2019149229 A1 WO 2019149229A1 CN 2019074021 W CN2019074021 W CN 2019074021W WO 2019149229 A1 WO2019149229 A1 WO 2019149229A1
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WO
WIPO (PCT)
Prior art keywords
grass
height
lawnmower
height adjustment
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/074021
Other languages
English (en)
French (fr)
Inventor
芬内尔斯潘塞
杨雪雨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Positec Power Tools Suzhou Co Ltd
Original Assignee
Positec Power Tools Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Positec Power Tools Suzhou Co Ltd filed Critical Positec Power Tools Suzhou Co Ltd
Publication of WO2019149229A1 publication Critical patent/WO2019149229A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/416—Flexible line cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general ; Anti-clogging castors

Definitions

  • the invention relates to the technical field of garden type power tools, in particular to a grass cutter.
  • the lawn mower is a garden-type power tool and is widely used in the field of garden vegetation maintenance.
  • the user needs to manually lift the lawn mower to hang the grass to perform the grass-fitting operation, which not only reduces the comfort of the user experience, but also increases the labor of the user to work on the grass, and the user manually It is easy to fatigue when lifting the lawn mower, and it cannot guarantee the constant cutting height, which reduces the grassing efficiency and affects the normal maintenance of the garden vegetation.
  • the invention provides a grass cutter, the grass cutter comprising:
  • a grass-carrying assembly comprising a grass-head that is driven to rotate to perform a grass-carrying operation and a shield that at least partially blocks the grass-crushing head, the grass-crushing head comprising a head shell and a cutting member extending outside the head shell, The cutting member is driven to rotate to form a cutting plane;
  • An operation component connected to the grass-blowering component and capable of controlling the grass-limining component to perform a grass-fitting operation
  • a moving component coupled to the grassing component for supporting at least a portion of the weight of the lawnmower during a grassing operation
  • the moving assembly includes at least one traveling wheel disposed on the grass-moving assembly, the walking wheel capable of supporting the grass-moving machine to move on a working surface;
  • the moving assembly further includes a height adjustment mechanism coupled to the walking wheel, the height adjustment mechanism being capable of adjusting a height of a bottom end of the traveling wheel relative to the cutting plane.
  • the walking wheel is a universal wheel, and the universal wheel can support the lawnmower to move in any direction on the working surface.
  • the number of the walking wheels is plural, and the height adjusting mechanism can integrally adjust the heights of the plurality of traveling wheels with respect to the cutting plane.
  • the number of the running wheels is three, and the three traveling wheels are spaced apart from each other in the outer circumferential direction of the shroud.
  • the height adjustment mechanism includes an adjustment operation member and an adjustment connection portion, the height adjustment connection portion is connected to each of the traveling wheels, and the height adjustment operation member is operable to pass The heightening connection portion simultaneously drives each of the walking wheels to change the same height.
  • the height adjustment operation member and the height adjustment connection portion are both disposed on the shroud, and the shroud is further provided with a fixing screw, and the height adjustment operation member is sleeved.
  • the adjusting screw is screwed to the fixing screw, and the height adjusting operation member is rotated to different positions with respect to the fixing screw, and the bottom end of the traveling wheel is associated with different heights with respect to the cutting plane.
  • the height adjustment operation member is specifically an adjustment knob
  • the outer side of the height adjustment knob extends in a radial direction thereof and forms a first protrusion
  • the height adjustment knob is further provided with a fixing piece
  • a necking portion is formed between the fixing piece and the first protrusion
  • the height adjusting connecting portion is embedded in the necking portion on the height adjusting knob.
  • a distance between the cutting plane and a bottom end of the traveling wheel is a cutting height of the lawnmower, and the height adjusting mechanism further includes an indication portion, the indicating portion Used to characterize parameters corresponding to the cutting height.
  • the number of the universal wheels is at least three, and the projection of the center of gravity of the grassing component on the working surface falls on a polygon with a plurality of the universal wheels as a vertex. In the range.
  • the number of the universal wheels is one, and one of the universal wheels is disposed on the grass head.
  • the number of the universal wheels is at least three, one of the universal wheels is disposed on the grass head, and the other of the universal wheels are spaced apart from the shield. The outer edge of the circumference.
  • the lever is provided with a torsion structure that is rotatable relative to the grassing assembly about its central axis.
  • the lawnmower provided by the invention adopts the moving component, can realize the support of the lawnmower and enables the lawnmower to move universally on the ground, so that the user does not need to lift the lawnmower
  • the grass-making operation can be carried out, the comfort of the user experience is improved, the labor amount when the user performs the grass-working operation is reduced, and the cutting height is ensured to be constant, and the cutting effect is improved.
  • FIG. 1 is a schematic perspective view of a lawnmower according to an embodiment of the present invention.
  • FIG. 2 is a perspective view of another perspective view of the lawnmower shown in FIG. 1.
  • Figure 3 is a partial cross-sectional view of the lawnmower shown in Figure 2.
  • FIG. 4 is a schematic structural view of another perspective view of the lawnmower shown in FIG. 1.
  • Figure 5 is a schematic view showing the structure of the lawn mower shown in Figure 1 from another perspective.
  • Figure 6 is a schematic cross-sectional view of a torsional structure.
  • Fig. 7 is an enlarged schematic view showing a part of the structure of the moving assembly.
  • Figure 8 is a perspective view of the height adjustment mechanism.
  • Figure 9 is a cross-sectional view of the height adjustment knob.
  • Figure 10 is a perspective view of the fixing piece.
  • Figure 11 is a schematic view showing the structure of the fixing piece shown in Figure 10.
  • Figure 12 is a schematic view showing the structure of the grass-blowering assembly shown in another embodiment.
  • a component when referred to as being “installed on” another component, it can be directly mounted on another component or a component that is in the middle. When a component is considered to be “set to” another component, it can be placed directly on another component or possibly with a centered component. When a component is considered to be “fixed” to another component, it can be directly attached to another component or a central component can be present at the same time.
  • FIG. 1 is a perspective view of a lawnmower 100 according to an embodiment of the present invention
  • FIG. 2 is a perspective view of the lawnmower 100 of FIG.
  • FIG. 4 is a schematic structural view of the lawnmower 100 of FIG. 1 in another perspective view
  • FIG. 5 is a schematic structural view of the lawnmower 100 of FIG.
  • the lawnmower 100 is provided for the maintenance of garden plants, removing and repairing weeds.
  • the lawnmower 100 includes an operating assembly 10, a grassing assembly 20, and a moving assembly 30.
  • the operating assembly 10 is coupled to the grass-blower assembly 20 for the user to operate and control the lawnmower 100 to control the grass-blower assembly 20 for grass-fed operations.
  • the moving assembly 30 is coupled to the grass-blower assembly 20 for supporting at least a portion of the weight of the lawnmower 100 during the grass-fitting operation, with the moving assembly 30 supporting the grass-carrying assembly 20 on the work surface, and the grass-blower assembly 20 moving The assembly 30 is moved on a workable surface under support, and the moving assembly 30 supports the grassing assembly 20 and moves the grassing assembly 20 on the ground.
  • the operation component 10, the grassing component 20 and the moving component 30 cooperate with each other to realize the grassing operation of the lawnmower 100.
  • the operation assembly 10 includes a vertically extending joystick 13 and an operating handle (11, 12) disposed at one end of the operating lever 13, and the grassing assembly 20 is coupled to the other end of the operating lever 13 with respect to the operating handle (11, 12).
  • the main handle 11 and the sub-handle 12 are connected to the operating lever 13.
  • the main handle 11 is disposed at one end of the operating lever 13 away from the grassing assembly 20, and the main handle 11 and the sub-handle 12 are oppositely disposed.
  • On the joystick 13 one end of the joystick 13 is fixedly connected to the main handle 11, and the other end is connected to the grassing assembly 20.
  • the user holds the main handle 11 in one hand and the sub-handle 12 in the other hand, and the user can hold the grass-worn 100 by using both hands to reduce the fatigue of one-hand operation and improve the user experience. For comfort, it is also convenient to lift the lawnmower 100 for hanging grass.
  • the sub-handle 12 in the operating assembly 10 can also be omitted in applications where the user only performs one-handed operation or does not need to hang up the grass.
  • the main handle 11 is disposed at one end of the operating lever 13 facing away from the grassing assembly 20.
  • the main handle 11 is provided with a telescopic adjustment mechanism 111 for adjusting the length of the operating lever 13.
  • the telescopic adjustment mechanism 111 When the user pulls the hook loop in the telescopic adjustment mechanism 111, the telescopic adjustment mechanism 111 is in an open state, and the user can adjust the length of the joystick 13 according to requirements; when the user withdraws the hook loop in the telescopic adjustment mechanism 111, the telescopic adjustment mechanism 111 is in the closed state, and the length of the joystick 13 is locked.
  • the main handle 11 is also provided with a power source 112 for supplying energy to the grass cutter 100.
  • the power source 112 is disposed below the main handle 11, and the power source 112 is a detachable battery pack. It can be understood that in other embodiments, the power source 112 can also be disposed at other positions of the main handle 11, and the power source 112 can also power the lawnmower 100 by other means such as gasoline engine driving, external alternating current, and the like.
  • the main handle 11 is further provided with an operation panel (not shown) for displaying the working parameters of the lawnmower 100, and for the user to adjust the working state of the lawnmower 100, and controlling the lawnmower 100 to perform the grassing operation.
  • the auxiliary handle 12 is mounted on the outer side of the operating lever 13 and disposed at an angle with the main handle 11.
  • the auxiliary handle 12 is pivotally connected to the operating lever 13.
  • the auxiliary handle 12 can adjust the rotation angle of the operating lever 11 and the rotation of the auxiliary handle 12.
  • the angle is adjustable, which makes it easy for the user to hold the joystick 13 and improve the comfort of the user experience.
  • the angle of rotation of the sub-handle 12 relative to the joystick 13 ranges from 0° to 120°, which avoids the customer's rotation of the sub-handle 12 to an angle unsuitable for grass-working operations.
  • the joystick 13 is a telescopic rod having two portions that are sleeved with each other.
  • the joystick 13 can change itself under the adjustment of the telescopic adjustment mechanism 111.
  • the length of the telescopic adjustment mechanism 111 adjusts the length of the overlapping portion of the joystick to achieve adjustment of the overall length of the joystick 13.
  • a pivoting structure 22 is also disposed between the joystick 13 and the grass-blower assembly 20 for pivoting the steering rod 13 relative to the grass-blower assembly 20, the pivoting structure 22 including the joystick 13
  • the torsion structure 131 is used to achieve the twisting of the joystick 13 about its central axis with respect to the grassing assembly 20 to improve the flexibility of the joystick 13 and improve the comfort of the user experience.
  • FIG. 6 is a schematic cross-sectional view of the torsion structure 131.
  • the torsion structure 131 includes a protrusion 132 extending in the direction of the central axis of the operating rod 13, and a protrusion 133 extending from the grassing assembly 20 along the central axis of the operating rod 13.
  • a fixed card 134 disposed between the joystick 13 and the grassing assembly 20.
  • the protrusions 132 and the protrusions 133 are annular, and the protrusions 132 are sleeved on the protrusions 133.
  • the protrusions 132 are defined in the radial direction of the protrusions 1321.
  • the protrusions 133 are located along the protrusions 1321 of the protrusions 132.
  • the groove 1331 is defined in the radial direction.
  • the opening position of the through hole 1321 on the protrusion 132 corresponds to the opening position of the groove 1331 on the protrusion 133.
  • the through hole 1321 is aligned with the groove 1331, and the fixing card 134 has a convex shape.
  • the convex portion is inserted into the recess 1331 and inserted into the recess 1331.
  • the fixing card 134 is engaged with the protrusion 132 and the protrusion 133 to realize the operation of the lever 13 and the grassing assembly 20.
  • the axial position of the relative position is such that the lever 13 is rotatable about its central axis.
  • the groove 1331 adopts a symmetrical segment structure, the number of the grooves 1331 is two, and the corresponding convex portions of the fixing card 134 are also two, and the convex portion of each fixing card 134 is fitted to In a section of the recess 1331, the angle of the central angle of each of the recesses 1331 further removes the angle of the central angle occupied by the convex portion of the fixed card 134, that is, the maximum rotation angle of the joystick 13 about its central axis.
  • the angle of the central angle corresponding to the groove 1331 is set to be slightly larger than 90 degrees, and the angle of the central angle corresponding to each of the grooves 1331 is set to 90 degrees after the angle of the central angle occupied by the convex portion of the fixed card 134 is removed.
  • the maximum rotation angle of the joystick 13 rotating about its central axis is set to 90°, and limiting the maximum rotation angle of the joystick 13 can prevent the user from twisting the joystick 13 to an excessive angle, thereby preventing the joystick 13 from being reversed and driven.
  • the main handle 11 and the sub-handle 12 are reversed, causing the joystick 13 to be in a twist angle that is unsuitable for grassing and causing the power source 112 on the main handle 11 to fall.
  • the opening angle of the groove 1331 can be set to other angles according to actual needs, and the maximum rotation angle of the joystick 13 can also be set to other angles than 90 degrees.
  • the length of the joystick 13 is adjusted by adjusting the telescopic adjustment mechanism 111 on the main handle 11, and the telescopic adjustment mechanism 111 realizes the overall length of the joystick 13 by adjusting the length of the handle portion 13 overlapping the sleeve portion.
  • the user holds the main handle 11 in one hand, and the sub-handle 12 is held in the other hand.
  • the main handle 11, the sub-handle 12 and the joystick 13 cooperate with each other to improve the user experience under the basic requirements of the user.
  • the comfort level reduces the fatigue of the user's grasswork.
  • the grassing assembly 20 is coupled to a joystick 13 in the operating assembly 10 for performing a grassing operation.
  • the grassing assembly 20 includes a grassing head 21 that is driven to rotate, and the energy of the grass head 21 at the power source 112. Feeding is carried out under the supply.
  • the grassing assembly 20 further includes a driving member (not shown) that drives the rotation of the grass head 21, and the grass head 21 includes a head casing, a cutting member that protrudes outside the head casing, and the cutting member is driven to rotate to form a cutting plane.
  • the cutting member is a straw rope (not shown) disposed in the grass head 21, and the driving member is connected to the power source 112.
  • the driving member drives the grass rope to rotate under the energy supply of the power source 112, and rotates.
  • the plane in which the straw is placed is the cutting plane.
  • the lawnmower 100 repairs the garden plants by rotating the grass rope.
  • the driving member is a motor
  • the straw is made of a nylon material.
  • the driving member can also adopt other types of power components such as a hydraulic pump, and the straw rope can also be made of other materials such as high-performance polymer fibers.
  • the straw rope can also be replaced with other cutting elements such as cutting tools as long as it can remove and repair the garden plants.
  • the grassing assembly 20 further includes a pivoting structure 22 having one end coupled to the operating lever 13 in the operating assembly 10 and the other end coupled to the grassing head 21, the pivoting structure 22 including a first pivoting head 221 and a
  • the two pivoting heads 222 are connected to each other, and the first pivoting head 221 and the end of the operating lever 13 away from the main handle 11 are pivotally connected to each other.
  • the second pivoting head 222 is pivotally connected to the first pivoting head 221 and the second pivoting head 222.
  • the first pivoting head 221, the second pivoting head 222 and the torsion structure 131 are coupled to each other to enable the three axes of the operating lever 13 relative to the grass head 21 to be coupled to the first pivoting head 221. Turn.
  • the grass-blower assembly 20 further includes a shield 23 that at least partially obscures the grass-crushing head 21 to prevent the grass-carrying rope driven by the driving member from injuring the person, protecting the safety of the person during the grass-fitting operation, and avoiding the grass clippings.
  • the operator splashes on one side.
  • a protective wire 24 is further disposed on the shield 23, and the protective wire 24 extends along the radial direction of the shield 23 and is pivotally connected to the shield 23. The protective wire 24 is tilted and pushed away from the lawnmower during the grassing operation. 100 flowers to avoid the flowers being accidentally injured and destroyed by the grass cutter 100.
  • the moving assembly 30 is coupled to the grassing assembly 20 for supporting the lawnmower 100 and enabling the lawnmower 100 to move.
  • the moving assembly 30 includes a roller support frame 31 disposed on the grass head 21 and a roller 32 disposed on the roller support frame 31.
  • One end of the roller support frame 31 is connected to the roller 32, and the other end is pivotally connected to the grass head 21, and the roller support frame 31 is rotatable relative to the grass head 21, and the roller 32 is rotatably coupled to the roller support frame 31.
  • the lawnmower 100 has different working modes, including a horizontal grassing working mode in which the cutting plane is horizontal, and a trimming working mode in which the cutting plane is in a vertical state.
  • the roller support frame 31 and the roller 32 cooperate with each other for supporting The lawnmower 100 in the trimming mode of operation enables the lawnmower 100 to move.
  • the cutting plane formed by the rotating grass rope is substantially parallel to the working surface.
  • the roller support frame 31 and the roller 32 do not work, and are disposed on the grass-head 21 parallel shield. 23 side of the bottom edge; when the lawn mower 100 is in the trimming working mode, the grass cutter 100 is turned over and the plane formed by the rotation of the grass rope is perpendicular to the working surface, and the roller support frame 31 and the roller 32 are pivotally connected.
  • the roller support frame 31 supports the roller 32, and the roller 32 enables the grass cutter 100 to move, thereby facilitating the user to trim the garden plants in the vertical direction.
  • the moving assembly 30 further includes at least one traveling wheel 33 disposed on the grassing assembly 20, the grassing assembly 20 is placed on the working surface with the at least one traveling wheel 33 as a support, and the grassing assembly 20 is on the walking wheel
  • the support of 33 can move on the work surface.
  • the user controls the operating handle so that the axis of rotation of the grass head 21 is maintained perpendicular to the working surface, and the cutting plane of the lawnmower 100 can be parallel to the working surface to make the cutting more flat.
  • the working surface here specifically refers to the lawn ground that needs to be trimmed.
  • the setting position and structural relationship of the moving component 30 will be specifically described below.
  • FIG. 7-8 is an enlarged schematic view showing a part of the structure of the moving assembly 30.
  • the moving assembly 30 further includes a plurality of traveling wheels 33 disposed on the shield 23, and the plurality of traveling wheels 33 are mutually connected.
  • the mating machine 100 can move and support the lawnmower 100 in the grassing operation, which can prevent the user from needing to apply force to lift the grass cutter 100 to hang the grass, reduce the labor of the user, and improve the workload. User experience comfort.
  • the number of the walking wheels 33 is at least three, and in the working surface, a polygon having at least three traveling wheels as a vertex, the rotation axis of the grass head 21 and the plurality of traveling wheels 33 as vertices
  • the polygons intersect and the axis of rotation is perpendicular to the plane in which the polygon is located.
  • the projection of the center of gravity of the grassing assembly 20 on the work surface falls within a range of polygons having vertices of the plurality of walking wheels 33.
  • the grassing assembly 20 is composed of a casing, a motor for driving the grass head 21, and a shroud 23.
  • the grassing assembly 20 does not include the motor.
  • the arrangement is such that the grass-carrying assembly 20 supported by the plurality of traveling wheels 33 can support the weight of the grass-carrying assembly 20 on the work surface without the deflection of the cutting plane caused by the instability of the center of gravity, and the support is more stable.
  • the number of the traveling wheels 33 is three.
  • the number of the traveling wheels 33 is three, and the three traveling wheels 33 are disposed on the outer circumferential direction of the shroud 23, and each of the traveling wheels 33 is spaced apart, and the connecting points of the three traveling wheels 33 correspond to each other.
  • the central angle of the shroud 23 ranges from 60° to 270°, and the grassing assembly 20 is moved universally on the working surface under the support of three traveling wheels.
  • the number of the traveling wheels 33 can also be set to three or more, and the three traveling wheels 33 can also adopt a scheme of a universal wheel and two rolling wheels as long as it can move the lawnmower 100.
  • the traveling wheels 33 are all universal wheels, and the lawn mower can be moved in any direction on the working surface with the support of the universal wheel.
  • the structure of each of the walking wheels 33 is the same, and for the sake of brevity of description, only the structure of one of the traveling wheels 33 will be described.
  • the traveling wheel 33 includes a rolling body and a connecting seat and a rotatably connected connection with the rolling body and the connecting seat.
  • the connecting seat is rotatably disposed relative to the rod body along the axis of the shaft.
  • the rolling body is rotatable relative to the connecting shaft about the rotating shaft.
  • the rotating shaft and the shaft axis Vertical to each other. Specifically, in this embodiment, referring to FIG.
  • each of the traveling wheels 33 includes a rod body 331, the rolling body is specifically a ball 333, the connecting seat is a ball seat 332, the ball body 333 is disposed in the ball seat 332, and the ball seat 332 is fixedly connected.
  • the ball 333 is disposed at an end of the rod 331 near the ground, the ball 333 is in contact with the ground, and the ball seat 332 is pivotally connected to the rod 331.
  • the ball seat 332 can rotate freely relative to the rod 331 and rotate the ball 333 to rotate circumferentially about the central axis of the rod 331.
  • the ball 333 is free to roll relative to the ball seat 332, and the ball 333 is circumferentially rotated and freely rolled to smoothly move the lawnmower 100.
  • the rolling body of the traveling wheel 33 may also be a roller structure as long as it can realize the universal rolling of the traveling wheel 33.
  • the moving assembly 30 further includes a height adjustment mechanism 34 coupled to the walking wheel to integrally adjust the height of the bottommost end of the plurality of traveling wheels 33 relative to the cutting plane.
  • the moving assembly 30 further includes a height adjusting mechanism 34 coupled to the traveling wheel 33, and the height adjusting mechanism 34 can adjust the height of the traveling wheel 33 relative to the grass head 21.
  • the number of the traveling wheels 33 is plural, and the height adjusting mechanism 34 can integrally adjust the heights of the plurality of traveling wheels 33 with respect to the grass head 21.
  • the height of the traveling wheel 33 with respect to the grass head 21 means the distance between the traveling wheel 33 and the grass head 21 in the direction perpendicular to the work surface.
  • the rod body 331 is disposed in the through hole 231 formed in the shield 23, and the through hole 231 is used for restricting the displacement of the traveling wheel 33 in the vertical direction, so that the traveling wheel 33 does not have a radial position during height adjustment. Deviation.
  • a fixing head 334 is further disposed at an end of the rod body 331 facing away from the ball seat 332.
  • the outer side surface of the fixing head 334 is provided with a groove 3341 along the circumferential direction thereof, and the fixing head 334 is configured to penetrate and fit the height adjusting mechanism 34, thereby realizing
  • the traveling wheel 33 is fixedly coupled to the height adjustment mechanism 34.
  • the fixing head 334 and the rod body 331 are fixed to each other by screwing. It can be understood that in other embodiments, the fixing head 334 and the rod body 331 may be fixed to each other by means of riveting, gluing or the like.
  • the height adjustment mechanism 34 includes an adjustment operation member 341 and a height adjustment connection portion 342.
  • the height adjustment connection portion 342 is connected to the plurality of traveling wheels 33, and is configured to simultaneously drive the plurality of the traveling wheels 33 relative to each other.
  • the grass head 21 is changed to the same height, and the height adjustment operating member 341 is operative to drive the height adjustment connecting portion 342 to integrally adjust the height of the plurality of traveling wheels 33 with respect to the grass head 21. That is, the height adjustment operating member 341 is operable to change the same height by the height adjustment connection portion 342 while driving each of the traveling wheels 33.
  • the height adjustment mechanism 34 also includes an indication portion (not shown) for indicating the cutting height, the indication portion being used to characterize a parameter corresponding to the cutting height.
  • the indicating unit can display the specific parameter of the cutting height, the pointing member is provided on the height adjusting operation member 341, and the different cutting height parameters are marked on the connecting portion 342, and the pointing operation is adjusted when the operating member 341 is adjusted at different operating positions. Indicates different height parameters.
  • the height parameter is a specific value or a height gear of the corresponding cutting height.
  • the pointing target can also be a card slot of different heights, and each card slot corresponds to a height gear.
  • the cutting height indicating portion can facilitate the operator to know the specific cutting height.
  • the cutting height of each universal wheel can be known and adjusted, and the drilling operation is repeated multiple times. In the lawn, each cutting height can be adjusted to the same parameter to prevent the inconsistency of multiple cutting heights.
  • the height adjustment mechanism 34 of the moving assembly 30 is disposed on the shield 23 and connected to each of the traveling wheels 33.
  • the height adjustment operation member 341 and the height adjustment connection portion 342 are connected to each other.
  • the height adjustment connecting portion 342 abuts against each of the traveling wheels 33 and is connected to the traveling wheel 33.
  • the height adjusting operation member 341 is used to adjust the height of the height adjusting connecting portion 342, and the height adjusting connecting portion 342 is used for driving and adjusting the plurality of traveling wheels.
  • the height of 33 thereby achieving an integrated adjustment of the heights of the plurality of traveling wheels 33, avoiding the user separately adjusting each of the traveling wheels 33, reducing the workload of the universal wheel adjustment, and avoiding the inconsistency of the heights of the plurality of universal wheels occur.
  • each of the running wheels 33 can be provided with a separate height adjustment mechanism.
  • Each height adjustment mechanism adjusts the height of the corresponding traveling wheel 33 from the grass head.
  • each height adjusting mechanism includes a corresponding height indicating portion, and each of the traveling wheels 33 can be easily known by the height indicating portion. The specific height parameter of 21, thereby controlling the adjustment of all of the walking wheels 33 to be consistent with the height of the grass head 21.
  • the number of the traveling wheels 33 is one, which is connected to the grass head 21 and is located below the grass head 21. Specifically, the traveling wheel 33 is coupled to the grass head 21 via a bearing, and the traveling wheel 33 is movable in any direction relative to the grass head 21 in the working surface.
  • the number of the walking wheels 33 may be three, one of which is disposed on the grass head 21 and located below the grass head 21, and the other two traveling wheels 33 are spaced apart from the outer edge of the shield 23 in the circumferential direction.
  • the other two universal wheels have the same distance from the universal wheel directly below the grass head 21, and the central angle of the corresponding shield 23 between the connection points of the other two universal wheels is 40°-120. °.
  • the number of the walking wheels 33 can also be set to be more than three, that is, one of them is disposed below the grassing head 21, and the remaining outer circumferential edges of the shields 23 are all disposed at intervals.
  • the traveling wheel 33 provided on the grass head 21 has an independent height adjusting mechanism 34' capable of independently adjusting the height of the traveling wheel 33 with respect to the grass head 21.
  • the height adjustment mechanism 34 includes a limit pin and a card slot of different heights, and the position pin is matched with the card slot of different heights to lock the grass head 21 at the set cutting height.
  • Each of the traveling wheels 33 provided on the shroud may be provided with an independent height adjusting mechanism.
  • each height adjustment mechanism is configured with a scale corresponding to different card slots, each scale corresponding to a corresponding cutting height, and the scale is used to indicate the current cutting height.
  • FIG. 9 is a cross-sectional view of the height adjustment operation member 341.
  • the height adjustment operation member 341 has a substantially hollow cylindrical shape, and the portion of the outer side surface of the operation member 341 that faces away from the ground is contracted toward the central axis thereof to form a buckle.
  • the engaging portion 3411 has a substantially elliptical shape for the external tool or manual close grip, and the external tool closely grips the engaging portion 3411 to drive the height adjusting operation member 341 to rotate.
  • a through hole 3412 is formed at a substantially center of the height adjustment operating member 341, and a central axis of the through hole 3412 substantially coincides with a central axis of the height adjustment operating member 341.
  • the fixing cover is further provided with a fixing screw 232.
  • the height adjustment operating member is sleeved on the fixing screw and is threadedly engaged with the fixing screw, and the operating member 341 is rotated relative to the fixing screw 232 to different positions, and the traveling wheel 33 is linked.
  • the bottom end has a different height relative to the cutting plane.
  • the through hole 3412 is used for the fixing screw 232 fixedly disposed on the shield 23, and the inner surface of the through hole 3412 is provided with an internal thread 3413, and the internal thread 3413 of the operation member 341 is passed through the through hole 3412.
  • the fixing screw 232 is screwed and fixed to each other.
  • the height adjustment operating member 341 is rotated about the fixing screw 232 by the external tool, and is raised or lowered relative to the fixing screw 232 by the threaded fitting structure.
  • the height adjustment operating member 341 is specifically a height adjustment knob, and the outer side of the height adjustment knob extends in a radial direction thereof to form a protrusion 3414.
  • the outer side surface of the height adjustment knob near the ground is further provided with a fixing piece 3415 for fixing.
  • the piece 3415 is fixedly disposed in the groove 3416 formed in the height adjustment knob, and a neck portion 3417 is formed between the protrusion 3414 and the fixing piece 3415.
  • the neck portion 3417 is used for pressing and embedding the height adjustment connection portion 342, the neck portion
  • the pitch of the constricted portion 3417 is substantially the same as the thickness of the height-adjusting connecting portion 342.
  • the fixing piece 3415 is used for pressing and fixing the height-adjusting connecting portion 342.
  • the fixing piece 3415 is further The recessed portion 3416 is fitted into the recessed portion 3416 and the height-adjusting connecting portion 342 is pressed, thereby achieving a fixed connection of the height-adjusting operating member 341 and the height-adjusting connecting portion 342 in the vertical direction.
  • the height adjustment connecting portion 342 is fitted in the height adjustment knob, and the height adjustment knob is rotatable relative to the height adjustment connecting portion 342 in the axial direction of the fixing screw 232.
  • FIG. 10 is a schematic perspective view of the fixing piece 3415
  • FIG. 11 is a schematic structural view of the fixing piece 3415 shown in FIG. 10
  • the fixing piece 3415 is substantially annular and vertical.
  • the central axis has a substantially "C" shape in cross section, and the fixing piece 3415 has a certain elasticity.
  • the fixing piece 3415 can adopt other shapes as long as it can be embedded in the groove 3416 and can realize a fixed connection between the height adjustment operation member 341 and the height adjustment connection portion 342.
  • the height adjustment connecting portion 342 is sleeved and fixed to the height adjusting operation member 341, and the fixing screw 232 is adjusted to be mounted on the fixing screw 232 of the shield 23,
  • the height adjustment connecting portion 342 is sleeved in the groove 3341 between the rod body 331 of the traveling wheel 33 and the fixing head 334.
  • the fixing head 334 on the traveling wheel 33 passes through the height adjusting connecting portion 342 and is fixedly connected to the rod body 331, and the rod body 331
  • the end of the traveling wheel 33 abuts the height adjustment connecting portion 342, and the other end of the traveling wheel 33 abuts the height adjusting connecting portion 342, and the other end is in contact with the ground, and the height adjusting operation member 341 is rotated relative to the height adjusting connecting portion 342 and rises along the axial direction of the fixing screw 232.
  • the lowering and height-increasing connecting portions 342 have different heights under the driving of the height-adjusting operating member 341, and the traveling wheels 33 have different embedding depths in the shroud 23, thereby realizing the adjustment of the height of the traveling wheels 33.
  • the height adjustment connecting portion 342 has a substantially "eight" shape, and the head portion is sleeved and fixed with the screw 232 and the height adjusting operation member 341, and the ends of the side flaps and the center of the head portion are each connected with a walking. Wheel 33. It can be understood that in other embodiments, the height adjustment connecting portion 342 can also adopt other shapes as long as it can sleeve the height adjusting operation member 341 and connect the traveling wheel 33.
  • the rod body 331 of each of the traveling wheels 33 abuts the height adjustment connecting portion 342.
  • the axial position of the traveling wheel 33 is determined by the height of the height adjusting connecting portion 342, and the external tool drives the height adjusting operating member 341 to rise in the axial direction of the fixing screw 232 or
  • the height change of the operating member 341 changes the height of the height adjusting connecting portion 342, so that the respective traveling wheels 33 that abut the height adjusting connecting portion 342 have different axial positions in the shroud 23, thereby realizing
  • the height adjustment of the traveling wheel 33 adjusts the connection portion 342 and fixedly connects the plurality of universal wheels, which can simultaneously adjust the axial positions of the plurality of traveling wheels 33 in the shroud 23, thereby realizing the height of the plurality of traveling wheels 33.
  • the lawnmower 100 provided by the present invention adopts the moving component 20, can realize the support of the lawnmower 100 and enables the lawnmower 100 to move universally on the ground, so that the user can perform grassing without pulling the lawnmower 100.
  • the work improves the comfort of the user experience, reduces the amount of labor for the user to carry out the grassing operation, and ensures that the cutting plane is constant and the grassing efficiency is improved.

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Abstract

一种打草机（100），其包括操作组件（10）、打草组件（20）及移动组件（30）。打草组件包括打草头（21）和护罩（23）。打草头包括头壳、伸出所述头壳外的切割件，其中，所述切割件被驱动旋转形成切割平面。操作组件连接于打草组件并能够控制打草组件进行打草作业。移动组件包括设置在打草组件上的至少一个行走轮（33），以及与行走轮相连接的高度调节机构（34），该高度调节机构能够调节所述行走轮的最底端相对于所述切割平面的高度。该打草机采用上述移动组件，能够实现对所述打草机的支撑和切割高度调节，提高打草质量。

Description

打草机 技术领域
本发明涉及园林类动力工具技术领域，尤其涉及一种打草机。
背景技术
打草机是园林类动力工具，在园林植被维护等领域中应用广泛。目前的打草机在进行打草作业时，用户需要手动提拉打草机悬空才能进行打草作业，不仅降低了用户体验的舒适度，增加了用户打草作业的劳动量，而且用户在手动提拉打草机时容易疲劳，且无法保证切割高度恒定，降低了打草效率，影响对园林植被的正常维护。
发明内容
有鉴于此，有必要提供一种改进的打草机，其能够降低用户打草作业的劳动量，在进行打草作业时保证切割平面的高度恒定。
本发明提供一种打草机，所述打草机包括：
打草组件，包括被驱动旋转以执行打草作业的打草头和至少部分遮挡所述打草头的护罩，所述打草头包括头壳、伸出所述头壳外的切割件，所述切割件被驱动旋转形成切割平面；
操作组件，连接于所述打草组件并能够控制所述打草组件进行打草作业；
移动组件，连接于所述打草组件，用于在打草作业中支撑至少部分所述打草机的重量；
所述移动组件包括设置在所述打草组件上的至少一个行走轮，所述行走轮能够支撑所述打草机在工作面上移动；
所述移动组件还包括与所述行走轮相连接的高度调节机构，所述高度调节机构能够调节所述行走轮的最底端相对于所述切割平面的高度。
在其中一优选的实施方式中，所述行走轮为万向轮，所述万向轮能够支撑所述打草机在所述工作面上向任意方向移动。
在其中一优选的实施方式中，所述行走轮的数量为多个，所述高度调节机构能够一体调节多个所述行走轮相对所述切割平面的高度。
在其中一优选的实施方式中，所述行走轮的个数为3个，3个所述行走轮间隔设置于所 述护罩的外缘周向上。
在其中一优选的实施方式中，所述高度调节机构包括调高操作件与调高连接部，所述调高连接部与各个所述行走轮相连接，所述调高操作件可操作的通过所述调高连接部同时带动各个所述行走轮改变相同高度。
在其中一优选的实施方式中，所述调高操作件与所述调高连接部均设置于所述护罩上，所述护罩上还设置有固定螺杆，所述调高操作件套设于所述固定螺杆上并与所述固定螺杆螺纹配合，所述调高操作件相对所述固定螺杆转动至不同位置，联动所述行走轮的最底端相对所述切割平面具有不同的高度。
在其中一优选的实施方式中，所述调高操作件具体为调高旋钮，所述调高旋钮的外侧面向其径向方向延伸并形成第一凸起，所述调高旋钮上还设置有固定片，所述固定片与所述第一凸起之间形成颈缩部，所述调高连接部嵌设于所述调高旋钮上的所述颈缩部内。
在其中一优选的实施方式中，所述切割平面与所述行走轮的最底端之间的距离为所述打草机的切割高度，所述高度调节机构还包括指示部，所述指示部用于表征与所述切割高度对应的参数。
在其中一优选的实施方式中，所述万向轮的数量为至少3个，所述打草组件的重心在所述工作面上的投影落在以多个所述万向轮为顶点的多边形的范围内。
在其中一优选的实施方式中，所述万向轮的数量为一个，一个所述万向轮设置于所述打草头上。
在其中一优选的实施方式中，所述万向轮的数量为至少3个，其中一个所述万向轮设置于所述打草头上，其余所述万向轮间隔设置于所述护罩的外缘周向。
在其中一优选的实施方式中，所述操纵杆上设置有扭转结构，所述操纵杆能够绕其中心轴线相对所述打草组件转动。
本发明提供的所述打草机采用所述移动组件，能够实现对所述打草机的支撑并使得所述打草机能够在地面上万向移动，使得用户无需提拉所述打草机即可进行打草作业，提高了用户体验的舒适度，降低了用户进行打草作业时的劳动量，而且可以保证切割高度恒定，提升切割效果。
附图说明
图1为本发明一实施方式中打草机的立体示意图。
图2为图1所示打草机另一视角的立体示意图。
图3为图2所示打草机的部分剖视示意图。
图4为图1所示打草机另一视角的结构示意图。
图5为图1所示打草机另一视角的结构示意图。
图6为扭转结构的剖视示意图。
图7为移动组件的部分结构放大示意图。
图8为高度调节机构的立体示意图。
图9为调高旋钮的剖视示意图。
图10为固定片的立体示意图。
图11为图10所示固定片的结构示意图。
图12为另一实施例所示的打草组件的结构示意图。
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，当组件被称为“装设于”另一个组件，它可以直接装设在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。当一个组件被认为是“固定于”另一个组件，它可以是直接固定在另一个组件上或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。
请一并参阅图1至图5，图1为本发明一实施方式中打草机100的立体示意图，图2为图1所示打草机100另一视角的立体示意图，图3为图2所示打草机100的部分剖视示意图， 图4为图1所示打草机100另一视角的结构示意图，图5为图1所示打草机100另一视角的结构示意图，本发明提供的打草机100用于园林植物的维护，清除并修理杂草。
打草机100包括操作组件10、打草组件20及移动组件30。操作组件10连接打草组件20，操作组件10用于供用户操作并控制打草机100，以控制打草组件20进行打草作业。移动组件30连接于打草组件20，用于在打草作业中支撑至少部分打草机100的重量，以移动组件30为支撑将打草组件20置于工作面上，打草组件20在移动组件30的支撑下在能够工作面上移动，移动组件30支撑打草组件20并使打草组件20在地面上移动。所述操作组件10、打草组件20及移动组件30相互配合，以实现打草机100的打草作业。
操作组件10包括纵长延伸的操纵杆13和设置在操作杆13一端的操作手柄(11，12)，打草组件20连接于操纵杆13相对操作手柄(11，12)的另一端。操作手柄包括主手柄11、副手柄12，主手柄11及副手柄12均连接于操纵杆13，主手柄11设置于操纵杆13远离打草组件20的一端，主手柄11及副手柄12相对设置于操纵杆13上，操纵杆13的一端固定连接主手柄11，另一端连接于打草组件20。在打草作业时，用户的一只手握持主手柄11，另一只手握持副手柄12，用户采用双手握持打草机100的方式能够降低单手操作的疲劳感，提高用户体验的舒适程度，另外可以方便将打草机100提起以进行悬空打草作业。可以理解，在其他实施方式中，在用户仅进行单手操作或者不需要悬空打草作业的应用场合，操作组件10中的副手柄12也可以省略。
主手柄11设置于操纵杆13背离打草组件20的一端，主手柄11上设置有伸缩调节机构111，伸缩调节机构111用于调节操纵杆13的长度。当用户提拉伸缩调节机构111中的勾环时，伸缩调节机构111处于打开状态，用户可根据需求调节操纵杆13的长度；当用户回撤伸缩调节机构111中的勾环时，伸缩调节机构111处于关闭状态，操纵杆13的长度锁定。
主手柄11上还设置有动力源112，动力源112用于为打草机100提供能量动力。本实施方式中，动力源112设置于主手柄11的下方，动力源112为可拆卸电池包。可以理解，在其他实施方式中，动力源112还可以设置于主手柄11的其他位置，动力源112还可以采用汽油机驱动、外接交流电等其他方式为打草机100提供动力。主手柄11上还设置有操作面板(图未示)，其用于显示打草机100的工作参数，并供用户调整打草机100的工作状态，控制打草机100进行打草作业。
副手柄12装设于操纵杆13的外侧面上并与主手柄11呈角度设置，副手柄12与操纵杆 13枢接，副手柄12可调节相对操作杆11的转动角度，副手柄12的转动角度可调，能够方便用户握持操纵杆13，提高用户体验的舒适度。本实施方式中，副手柄12相对操纵杆13的转动角度范围为0°至120°，该角度范围能够避免客户将副手柄12旋转至不适宜打草作业的角度上。
操纵杆13的一端连接主手柄11，另一端连接打草组件20，操纵杆13为伸缩杆，其具有相互套接的两个部分，操纵杆13可在伸缩调节机构111的调节作用下改变自身的长度，伸缩调节机构111调节操纵杆重叠套接部分的长度，以实现对操纵杆13整体长度的调节。操纵杆13与打草组件20之间还设置有枢转结构22，枢转结构22用于实现操纵杆13相对打草组件20的三轴调整，枢转结构22包括设置于操纵杆13上的扭转结构131，扭转结构131用于实现操纵杆13绕其中心轴线方向相对于打草组件20的扭转，以提高操纵杆13的灵活性，提高用户体验的舒适度。
请参阅图6，图6为扭转结构131的剖视示意图，扭转结构131包括操纵杆13沿其中心轴线方向延伸的凸起132、打草组件20沿操纵杆13中心轴线方向延伸的凸起133、设置于操纵杆13和打草组件20之间的固定卡134。
凸起132与凸起133呈圆环状，凸起132套设于凸起133，凸起132上沿其径向开设有通孔1321，凸起133相对凸起132上通孔1321的位置沿其径向开设有凹槽1331，凸起132上的通孔1321的开设位置与凸起133上的凹槽1331的开设位置相互对应，通孔1321对准凹槽1331，固定卡134具有外凸的部分，其外凸的部分穿过通孔1321后嵌设于凹槽1331内，固定卡134通过与凸起132及凸起133的嵌设配合，实现对操纵杆13与打草组件20之间相对位置的轴向限位，并使得操纵杆13可绕其中心轴线方向转动。
本实施方式中，凹槽1331采用对称式分段结构，凹槽1331的数量为两个，对应的固定卡134的外凸部分也为两个，每个固定卡134的外凸部分嵌合于一段凹槽1331内，每一段凹槽1331对应的圆心角的角度再去除固定卡134外凸部分所占的圆心角的角度，即是操纵杆13绕其中心轴线方向旋转的最大转动角度，每一段凹槽1331对应的圆心角的角度设置为略大于90度，每一段凹槽1331对应的圆心角的角度在去除固定卡134外凸部分所占的圆心角的角度后设置为90度，从而使得操纵杆13绕其中心轴线方向旋转的最大转动角度设置为90°，限制操纵杆13的最大转动角度能够避免用户将操纵杆13扭转至过大的角度上，避免操纵杆13反转并带动主手柄11、副手柄12反转，造成操纵杆13处于不适宜打草的扭转角度中并使 得主手柄11上的动力源112掉落。可以理解，在其他实施方式中，凹槽1331的开设角度还可以根据实际的需要开设为其他的角度，操纵杆13的最大转动角度还可以设置为除90°之外的其他角度。
用户在进行打草作业时，通过调节主手柄11上的伸缩调节机构111调节操纵杆13的长度，伸缩调节机构111通过调节操纵杆13重叠套接部分的长度，实现对操纵杆13整体长度的调节，用户一只手握持主手柄11，另一只手握持副手柄12，主手柄11、副手柄12及操纵杆13相互配合，能够在满足用户基本的打草作业需求下，提高用户体验的舒适度，降低用户打草作业的疲劳感。
打草组件20连接于操作组件10中的操纵杆13，打草组件20用于进行打草作业，打草组件20包括被驱动旋转的打草头21，打草头21在动力源112的能量供给下进行打草作业。
打草组件20还包括驱动打草头21旋转的驱动件(图未示)，打草头21包括头壳、伸出所述头壳外的切割件，切割件被驱动旋转形成切割平面。具体的，切割件为打草头21内设置的打草绳(图未示)，该驱动件连接于动力源112，该驱动件在动力源112的能量供给下带动打草绳转动，转动的打草绳所在的平面即为切割平面。打草机100通过打草绳的转动对园林植物进行修理。
本实施方式中，驱动件为电机，打草绳采用尼龙材料制成。可以理解，在其他实施方式中，驱动件还可以采用液压泵等其他类型的动力元件，打草绳也可以采用高性能聚合物纤维等其他材料。可以理解，在其他实施方式中，打草绳也可以更换为切割刀具等其他的切割元件，只要其能够清除和修理园林植物即可。
打草组件20还包括枢转结构22，枢转结构22的一端连接于操作组件10中的操纵杆13，另一端连接于打草头21，枢转结构22包括第一枢转头221和第二枢转头222，第一枢转头221和第二枢转头222之间相互连接，第一枢转头221与操纵杆13远离主手柄11的一端相互枢接，第二枢转头222设置于打草头21上并连接于第一枢转头221，第一枢转头221、第二枢转头222及扭转结构131相互配合，能够实现操纵杆13相对打草头21的三轴转动。
打草组件20还包括护罩23，护罩23至少部分遮挡打草头21，避免由驱动件驱动转动的打草绳误伤人员，保护打草作业过程中的人员安全，同时能够避免草屑向操作者一侧飞溅。护罩23上还设置有护花钢丝24，护花钢丝24沿护罩23的径向延伸并枢接在护罩23上，护花钢丝24在打草作业时倾斜并推离靠近打草机100的花卉，避免花卉被打草机100误伤和破 坏。
移动组件30连接于打草组件20，其用于支撑打草机100并使打草机100能够移动。移动组件30包括设置于打草头21上的滚轮支撑架31及设置于滚轮支撑架31上的滚轮32，滚轮支撑架31的一端连接滚轮32，另一端枢接打草头21，滚轮支撑架31可相对打草头21转动，滚轮32转动地连接于滚轮支撑架31。打草机100具有不同的作业模式，其包括切割平面处于水平状态的水平打草工作模式、切割平面处于竖直状态的修边工作模式，滚轮支撑架31与滚轮32相互配合，用于支撑处于修边工作模式的打草机100并使得打草机100能够移动。
当打草机100处于打草工作模式时，旋转的打草绳所形成的切割平面大致与工作面相平行，此时滚轮支撑架31及滚轮32不工作，其设置于打草头21平行护罩23底边的一侧；当打草机100处于修边工作模式时，打草机100翻转并使得打草绳旋转所形成的平面垂直于工作面，此时滚轮支撑架31及滚轮32枢接于护罩23底边的一侧，滚轮支撑架31支撑滚轮32，滚轮32使得打草机100能够移动，从而方便用户对园林植物进行竖直方向上的修边。
移动组件30还包括设置在所述打草组件20上的至少一个行走轮33，以该至少一个行走轮33为支撑将所述打草组件20置于工作面上，打草组件20在行走轮33的支撑下能够在工作面上移动。在打草过程中，使用者控制操作手柄，使打草头21的旋转轴线以垂直于工作面的方式被保持，打草机100的切割平面能够平行于工作面，以使切割更平整。这里工作面具体是指需要修剪的草坪地面。下面具体对移动组件30的设置位置和结构关系进行说明。
本实施例中，请参阅图7-8，图7-8为移动组件30的部分结构放大示意图，移动组件30还包括设置于护罩23上的多个行走轮33，多个行走轮33相互配合，能够使得打草机100可以移动并支撑处于打草作业中的打草机100，其能够避免用户需要施力提拉才可以使得打草机100悬空打草，降低用户的劳动量，提高用户体验的舒适度。
在其中一实施方式中，行走轮33的数量为至少3个，在工作面内，以至少3个行走轮作为顶点的多边形，打草头21的旋转轴线与以多个行走轮33为顶点的多边形相交，且所述旋转轴线垂直于所述多边形所在的平面。在另一实施方式中，打草组件20的重心在工作面上的投影落在以多个行走轮33为顶点的多边形的范围内。这里打草组件20由壳体、驱动打草头21的电机、护罩23组成，当然，若电机并非设置在打草头21相对延伸杆13的同一侧，打草组件20则不包括电机。这样设置，使得以多个行走轮33为支撑的打草组件20能够将打草 组件20的重量支撑于工作面上，而不发生重心不稳导致的切割平面的偏斜，支撑更加稳定。优选的，行走轮33的个数为3个。
本具体实施方式中，行走轮33的数量为三个，三个行走轮33均设置于护罩23的外缘周向，每个行走轮33间隔设置，三个行走轮33连接点之间对应护罩23的圆心角范围为60°至270°，打草组件20在三个行走轮的支撑下在工作面上万向移动。可以理解，行走轮33的数量还可以设置为三个以上，三个行走轮33还可以采用一个万向轮和两个滚动轮的方案，只要其能够使得打草机100移动即可。
本具体实施例中，行走轮33全部为万向轮，打草机以万向轮为支撑能够在工作面上向任意方向移动。每一个行走轮33的结构都相同，这里为了描述简洁，仅对一个行走轮33的结构进行介绍。行走轮33包括滚动体和连接座以及与杆体，滚动体与连接座可转动的连接，连接座相对杆体沿杆体轴线可转动的设置，滚动体相对连接座绕转轴可转动，该转轴与杆体轴线相互垂直。具体的，本实施例中，请参见图7，每一行走轮33包括杆体331，滚动体具体为球体333，连接座为球座332，球体333设置于球座332内，球座332固定连接球体333并设置于杆体331靠近地面的一端，球体333与地面接触，球座332与杆体331枢接，球座332可相对杆体331自由转动并带动球体333绕杆体331的中心轴线周向转动，球体333又可相对球座332自由滚动，球体333的周向转动和自由滚动，能够顺畅的移动打草机100。当然，行走轮33的滚动体也可以是滚轮结构，只要其能够实现行走轮33的万向滚动即可。
移动组件30还包括与行走轮相连接的高度调节机构34，能够一体调节多个行走轮33的最底端相对所述切割平面的高度。请一并参阅图8，移动组件30还包括与行走轮33相连接的高度调节机构34，高度调节机构34能够调节行走轮33相对于打草头21的高度。行走轮33的数量为多个，高度调节机构34能够一体调节多个行走轮33相对打草头21的高度。这里，行走轮33相对打草头21的高度是指，在垂直于工作面的方向上，行走轮33与打草头21的距离。
杆体331穿设于护罩23上开设的通孔231内，通孔231用于限制行走轮33的在竖直方向上的位移，使得行走轮33在高度调节的过程中不会出现径向位置的偏差。杆体331背向球座332的一端还设置有固定头334，固定头334的外侧面沿其周向开设有凹槽3341，固定头334用于穿设并嵌合固定高度调节机构34，从而实现行走轮33与高度调节机构34的固定连接。
本实施方式中，固定头334与杆体331之间通过螺纹连接方式相互固定。可以理解，在其他实施方式中，固定头334与杆体331之间还可以采用铆接、胶固等连接方式相互固定。
具体的，所述高度调节机构34包括调高操作件341与调高连接部342，调高连接部342与多个行走轮33相连接，并配置为能够同时带动多个所述行走轮33相对打草头21的改变相同高度，调高操作件341用于可操作的带动调高连接部342以一体调节多个行走轮33相对所述打草头21的高度。也就是说，调高操作件341可操作的通过调高连接部342同时带动各个所述行走轮33改变相同高度。
为了保证切割平整度，打草作业中切割平面需要保持大致平行于工作面，切割平面与行走轮的最底端之间的距离为打草机的切割高度，即切割平面与工作面的距离为切割高度。高度调节机构34还包括用于指示所述切割高度的指示部(未示出)，所述指示部用于表征与切割高度相对应的参数。具体的，指示部能够显示切割高度的具体参数，调高操作件341上设置有指向标，调高连接部342上标识不同切割高度参数，调高操作件341在不同的操作位置时指向标对应指示不同的高度参数。更具体的，高度参数是对应的切割高度的具体数值或者高度档位。当然，指向标也可以为不同高度的卡位槽，每个卡位槽对应一个高度档位。切割高度指示部能够方便操作者知晓具体的切割高度，在独立调高的多个万向轮方案中，能够知晓并调整每一个万向轮的切割高度均一致，并且在多次打草作业的草坪中，能够将每次切割高度都调成相同参数，防止多次切割高度不一致的情况发生。
图8为高度调节机构34的立体示意图，移动组件30中的高度调节机构34设置于护罩23上并与每个行走轮33相互连接，调高操作件341与调高连接部342相互连接，调高连接部342抵持每一行走轮33并与行走轮33相连接，调高操作件341用于调整调高连接部342的高度，调高连接部342用于带动并调整多个行走轮33的高度，从而实现对多个行走轮33高度的一体调节，避免用户对每一个行走轮33进行分别调节，减少了万向轮调节的工作量，避免多个万向轮的高度不一致的情况发生。
在另一实施方式中，每个行走轮33可以设置独立的高度调节机构。每个高度调节机构对应调节相应行走轮33距离打草头的高度。优选的，为了每个行走轮33的与打草头21的高度一致，每个高度调节机构都包括对应的高度指示部，通过高度指示部可以容易的得知每个行走轮33距离打草头21的具体高度参数，从而控制调节所有的行走轮33距离打草头21的高度一致。
在一实施方式中，请参照图12，行走轮33的数量为一个，连接于打草头21上，位于打草头21的下方。具体的，行走轮33通过轴承与打草头21相连接，行走轮33可相对打草头21在工作面内向任意方向移动。当然，行走轮33的数量也可以设置三个，其中一个设置于打草头21上，位于打草头21的下方，另外两个行走轮33间隔设置于护罩23的外缘周向。具体的，另外两个万向轮与打草头21正下方的万向轮的距离相同，另外两个万向轮的连接点之间相应的护罩23的圆心角的范围是40°-120°。可以理解的，行走轮33的个数也可以设置大于3个，即其中一个设置于打草头21的下方，其余的全部间隔设置的护罩23的外缘周向。在该实施例中，设置于打草头21上的行走轮33具有独立的高度调节机构34’，能够独立调节行走轮33相对打草头21的高度。具体的，高度调节机构34包括限位销和不同高度的卡位槽，将限位销与不同高度的卡位槽配合定位，能够将打草头21锁定在设定的切割高度。护罩上设置的每个行走轮33可以设置独立的高度调节机构，当然也可以设置成一体调高的高度调节机构，只要能够调节多个行走轮33相对打草头21的距离即可。优选的，每个高度调节机构都配置有对应不同卡位槽的刻度表，每个刻度表对应相应的切割高度，刻度表用于指示当前的切割高度。
请参阅图9，图9为调高操作件341的剖视示意图，调高操作件341大致呈中空圆柱形，调高操作件341外侧面中背离地面的部分向其中心轴线方向收缩并形成扣合部3411，扣合部3411大致呈椭圆形，其用于外部工具或手动紧密抓持，外部工具紧密抓持扣合部3411从而带动调高操作件341旋转。
调高操作件341的大致中心处开设有通孔3412，通孔3412的中心轴线与调高操作件341的中心轴线大致重合。护罩上还设置有固定螺杆232，调高操作件套设于所述固定螺杆上并与所述固定螺杆螺纹配合，调高操作件341相对固定螺杆232转动至不同位置，联动行走轮33的最底端相对切割平面具有不同的高度。具体的，通孔3412用于供固定设置于护罩23上的固定螺杆232穿过，通孔3412的内侧面上开设有内螺纹3413，调高操作件341通过通孔3412上的内螺纹3413与固定螺杆232相互螺合固定。调高操作件341在外部工具的带动下绕固定螺杆232转动，并通过螺纹配合结构实现相对固定螺杆232的上升或下降。
本实施例中，调高操作件341具体为调高旋钮，调高旋钮外侧面向其径向方向延伸并形成凸起3414，调高旋钮靠近地面的外侧面上还装设有固定片3415，固定片3415固定设置于调高旋钮上开设的凹槽3416内，凸起3414与固定片3415之间形成一颈缩部3417，颈缩部 3417用于压紧并嵌设调高连接部342，颈缩部3417的间距与调高连接部342的厚度大体一致，固定片3415用于压紧并固定调高连接部342，调高连接部342在固定于调高操作件341后，固定片3415再嵌入凹槽3416内并压紧调高连接部342，从而实现调高操作件341与调高连接部342的在竖直方向上的固定连接。调高连接部342嵌合于调高旋钮内，调高旋钮可相对调高连接部342沿固定螺杆232的轴向方向转动。
请一并参阅图10与图11，图10为固定片3415的立体示意图，图11为图10所示固定片3415的结构示意图，本实施方式中，固定片3415大致呈圆环状，其垂直中心轴线的截面大致呈“C”字形，固定片3415具有一定的弹性，当固定片3415嵌入调高操作件341上的凹槽3416内时，固定片3142上的缺口朝向调高操作件341设置并发生弹性扩张，使得固定片3142上的缺口变大直至固定片3415完全的套设于调高操作件341内。
可以理解，在其他实施方式中，固定片3415还可以采用其他的形状，只要其能够嵌入凹槽3416内并能够实现调高操作件341与调高连接部342之间的固定连接即可。
调高连接部342套设并固定于调高操作件341，调高操作件341再套设于护罩23上的固定螺杆232，
调高连接部342套设于行走轮33的杆体331与固定头334之间的凹槽3341内，行走轮33上的固定头334穿过调高连接部342再固定连接于杆体331，杆体331的末端抵持调高连接部342，行走轮33的一端抵持调高连接部342，另一端与地面接触，调高操作件341相对调高连接部342转动并沿固定螺杆232轴向方向上升/下降，调高连接部342在调高操作件341的带动下具有不同的高度，行走轮33在护罩23内便具有不同的嵌入深度，从而实现对行走轮33高度的调节。
本实施方式中，调高连接部342大致呈“八”字形，其头部套设并固定螺杆232和调高操作件341，其两侧翼板的末端及头部的大致中心处各连接一个行走轮33。可以理解，在其他实施方式中，调高连接部342还可以采用其他的形状，只要其能够套设调高操作件341并连接行走轮33即可。
下面描述高度调节机构34的一体调节多个行走轮33的过程：
每个行走轮33中的杆体331抵持调高连接部342，行走轮33的轴向位置由调高连接部342高度决定，外部工具驱动调高操作件341沿固定螺杆232的轴线方向上升或下降，调高操作件341的高度变化带动调高连接部342的高度发生变化，从而使得抵持调高连接部342 的各个行走轮33在护罩23内具有不同的轴向位置，从而实现对行走轮33的高度调节，调高连接部342同时固定连接多个万向轮，其能够同时调节多个行走轮33在护罩23内的轴向位置，从而实现对多个行走轮33高度的一体调节。
本发明提供的打草机100采用移动组件20，能够实现对打草机100的支撑并使得打草机100能够在地面上万向移动，使得用户无需提拉打草机100即可进行打草作业，提高了用户体验的舒适度，降低了用户进行打草作业时的劳动量，而且可以保证切割平面恒定，提高打草效率。
本技术领域的普通技术人员应当认识到，以上的实施方式仅是用来说明本发明，而并非用作为对本发明的限定，只要在本发明的实质精神范围内，对以上实施方式所作的适当改变和变化都落在本发明要求保护的范围内。

Claims (12)

  1. 一种打草机，其特征在于，所述打草机包括：
    打草组件，包括被驱动旋转以执行打草作业的打草头和至少部分遮挡所述打草头的护罩，所述打草头包括头壳、伸出所述头壳外的切割件，所述切割件被驱动旋转形成切割平面；
    操作组件，连接于所述打草组件并能够控制所述打草组件进行打草作业；
    移动组件，连接于所述打草组件，用于在打草作业中支撑至少部分所述打草机的重量；
    其特征在于，所述移动组件包括设置在所述打草组件上的至少一个行走轮，所述行走轮能够支撑所述打草机在工作面上移动；
    所述移动组件还包括与所述行走轮相连接的高度调节机构，所述高度调节机构能够调节所述行走轮的最底端相对于所述切割平面的高度。
  2. 如权利要求1所述的打草机，其特征在于，所述行走轮为万向轮，所述万向轮能够支撑所述打草机在所述工作面上向任意方向移动。
  3. 如权利要求1所述的打草机，其特征在于，所述行走轮的数量为多个，所述高度调节机构能够一体调节多个所述行走轮相对所述切割平面的高度。
  4. 如权利要求3所述的打草机，其特征在于，所述行走轮的个数为3个，3个所述行走轮间隔设置于所述护罩的外缘周向上。
  5. 如权利要求3所述的打草机，其特征在于，所述高度调节机构包括调高操作件与调高连接部，所述调高连接部与各个所述行走轮相连接，所述调高操作件可操作的通过所述调高连接部同时带动各个所述行走轮改变相同高度。
  6. 如权利要求5所述的打草机，其特征在于，所述调高操作件与所述调高连接部均设置于所述护罩上，所述护罩上还设置有固定螺杆，所述调高操作件套设于所述固定螺杆上并与所述固定螺杆螺纹配合，所述调高操作件相对所述固定螺杆转动至不同位置，联动所述行走轮的最底端相对所述切割平面具有不同的高度。
  7. 如权利要求6所述的打草机，其特征在于，所述调高操作件具体为调高旋钮，所述调高旋钮的外侧面向其径向方向延伸并形成第一凸起，所述调高旋钮上还设置有固定片，所述固定片与所述第一凸起之间形成颈缩部，所述调高连接部嵌设于所述调高旋钮上的所述颈缩部内。
  8. 如权利要求1所述的打草机，其特征在于，所述切割平面与所述行走轮的最底端之间 的距离为所述打草机的切割高度，所述高度调节机构还包括指示部，所述指示部用于表征与所述切割高度对应的参数。
  9. 如权利要求2所述的打草机，其特征在于，所述万向轮的数量为至少3个，所述打草组件的重心在所述工作面上的投影落在以多个所述万向轮为顶点的多边形的范围内。
  10. 如权利要求2所述的打草机，其特征在于，所述万向轮的数量为一个，一个所述万向轮设置于所述打草头上。
  11. 如权利要求2所述的打草机，其特征在于，所述万向轮的数量为至少3个，其中一个所述万向轮设置于所述打草头上，其余所述万向轮间隔设置于所述护罩的外缘周向。
  12. 如权利要求1所述的打草机，其特征在于，所述操纵杆上设置有扭转结构，所述操纵杆能够绕其中心轴线相对所述打草组件转动。
PCT/CN2019/074021 2018-01-30 2019-01-30 打草机 Ceased WO2019149229A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN207948148U (zh) * 2018-01-30 2018-10-12 苏州宝时得电动工具有限公司 打草机

Citations (7)

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EP0304903A1 (de) * 1987-08-28 1989-03-01 Deere & Company Höhenverstellbarer Handrasenmäher
US4835952A (en) * 1985-07-23 1989-06-06 Mclane Frank E Lawn mower height adjustment linkages
CN200953749Y (zh) * 2006-09-13 2007-10-03 黄以良 一种尼龙绳割草机改良结构
CN201278649Y (zh) * 2008-08-28 2009-07-29 吴子广 一种割草机
CN104798526A (zh) * 2014-01-23 2015-07-29 苏州宝时得电动工具有限公司 打草机
CN205284165U (zh) * 2016-01-15 2016-06-08 钱庆伟 新型多用途打草机
CN207948148U (zh) * 2018-01-30 2018-10-12 苏州宝时得电动工具有限公司 打草机

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4835952A (en) * 1985-07-23 1989-06-06 Mclane Frank E Lawn mower height adjustment linkages
EP0304903A1 (de) * 1987-08-28 1989-03-01 Deere & Company Höhenverstellbarer Handrasenmäher
CN200953749Y (zh) * 2006-09-13 2007-10-03 黄以良 一种尼龙绳割草机改良结构
CN201278649Y (zh) * 2008-08-28 2009-07-29 吴子广 一种割草机
CN104798526A (zh) * 2014-01-23 2015-07-29 苏州宝时得电动工具有限公司 打草机
CN205284165U (zh) * 2016-01-15 2016-06-08 钱庆伟 新型多用途打草机
CN207948148U (zh) * 2018-01-30 2018-10-12 苏州宝时得电动工具有限公司 打草机

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